b'EXTREME WEATHERFigure 4: Example of the application of hot and cold weather shock for a dark-coloured roof covering.APPLICATION OF mationandfollowingtheframework,that temperature was maintained as the WEATHER SHOCK PARAMETERS inFigure2thecoldandhotweatherbaseline of the weather shock cycling. Forasphaltshingles,therelationshipshockcomponenttemperaturesandAlso, to replicate the cycling that already ofthecomponenttemperaturewastheir respective number of occurrencesnaturallyoccurswiththechangein determined to be twice that of the airwere determined. Since the materials areseasons, the hot and cold weather shocks temperature[6][7].Usingthisinfor- currentlyevaluatedatlabtemperature,were alternated. BUILDING ENVELOPE CONTRACTOR SPECIALIZING IN250-374-0154 westernroofi ng.cainfo@westernroofi ng.ca 20 lROOFINGBClSUMMER 2023'